9. The TPR (total physical response) to blood flow is greater than the resistanc

Question

9. The TPR (total physical response) to blood flow is greater than the resistance to flow through any of the systemic organs. True or false?

10. Other factors constant equal, a decrease in the renal vascular resistance will increase TPR. True or false?

11. Constriction of arterioles in an organ promotes reabsorption of interstitial fluid from that organ. True or false?

12. Chronic elevation of arterial pressure requires that either cardiac output or TPR (or both) be chronically elevated. True or false?

13. Whenever cardiac output is increased, the mean arterial pressure must also be increased. True or false?

Explanation / Answer

9. The TPR (total physical response) to blood flow is greater than the resistance to flow through any of the systemic organs. True

TPR is the amount of resistance to blood flow present in the vascular system of the body. It is the amount of force working against the heart as it ejects blood into the vascular system.

10. a decrease in the renal vascular resistance will increase TPR. False

Increase in extracellular fluid volume will increase the blood flow increasing cardiac output and TPR.

11. Constriction of arterioles in an organ promotes reabsorption of interstitial fluid from that organ. True

Blood flows through arterioles because of force provided by interstitial fluid, which is blood plasma minus most of protein, it is less than osmotic pressure causes reabsorption of interstitial fluid.

12. Chronic elevation of arterial pressure requires that either cardiac output or TPR (or both) be chronically elevated. True

When peripheral resistance increases, cardiac output decreases. that leads to overwork heart and causes cardiac hypertrophy.

13. Whenever cardiac output is increased, the mean arterial pressure must also be increased. True

Mean arterial Pressure= Cardiac output * TPR

So, as cardiac output is increased, mean arterial pressure also increase.

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